how to manage and verify facebook accounts without getting banned?

hi
i want to make 5 facebook account and experiment with them/
phone verification is the first of my concern, is there any way i can get free online number to verify my accounts?
secondly
photo verification is a problem after i add 50+ friends.
i got picture packs and bot ready with me and i can post in multiple groups
throw in some advice guys.
i could not post to the social media section so i posted here.

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